Valve removing tool



March 24, 1953 DYCK 2,632,238

VALVE REMOVING TOOL Filed June 27, 1950 INVENTOR. DAVID DYCK BY 77km 6mmv mm AT TO D N EYS Patented Mar. 24, 1953 UNITED STATES PATENT OFFICEVALVE REMOVING TOOL David Dyck, Hudson Bay, Saskatchewan, CanadaApplication June 27, 1950, Serial No. 170,539

2 Claims.

vide a valve removing tool which is simple in structure and cheap tomanufacture.

Other objects of this invention will become apparent from consulting thefollowing specification in conjunction with the drawings.

In the drawings:

Figure 1 is a side elevational view with parts in section of the valveremoving tool of the present invention in its contracted position asapplied to a valve assembly at the beginning of its removal from a blockof an internal combustion engine.

Figure 2 is a side elevational view of the tool as applied in Figure lbut showing the tool in its extended position and the valve assembly atthe end of its removal from a block of an internal combustion engine.

Figure 3 is an enlarged perspective view of the valve disassembling toolof the present invention, with parts broken away and in section.

Referring now more particularly to the drawings wherein like referencenumerals have been used throughout the several views to designate likeparts, there is shown the valve removing tool of the present invention,generally designated by the numeral [0, as applied to the valve assemblyI l, which is seated in the block l2 of an internal combustion engine.

The block 12 of the internal combustion engine, which is generallyillustrated as the Ford type, includes a pair of confronting bores l4,[5 which are readily accessible to the mechanic upon removal of thecover of the block l2, not shown. Disposed within the bores I4, I5 is aconventional valve assembly II which includes a bushing I6 disposedwithin the bore l4 and a valve stem I7 reciprocable in the bushing l6and carrying a valve head l8 which is normally urged into seatingengagement with the seat l9 by a valve spring 20, the spring beingcircumposed about the stem l1 between a shoulder 24 on the bushing l3and an abutment 2| on the lower end of the stem I1.

Disposed within the bore I5 in aligned abutting relation with the stem11 is a cam follower 25 which is reciprocated by a cam 22 carried by thecam shaft 23 of the internal combustion engine.

The aforementioned structure of the valve assembly II and the camactuating mean is entirely conventional and forms no part of the valvedisassembling tool of the present invention, which includes a pair ofarms 30, 3| disposed in spaced confronting relation with respect to eachother and pivotally connected together at one end thereof for movementtoward and away from each other. Each of the arms 30, 3| is of likestructure and includes a shank 32, 33 having an inwardly extending web34, 35 carried at one end thereof, and an inwardly converging forceapplyin member 36, 31 carried at the other end thereof. The free ends ofthe force applying members 36, 31 are offset with respect to the mainportion thereof and form bearing plates. 38, 39.

It is to be noted that the respective webs 34,

' 35 are disposed at right angles with respect to the shanks 32, 33 andare arranged in end to end abutting relation with respect to each other,the abutting ends of the webs 34, 35 being rounded as indicated at 40,4|.

Disposed exteriorly of the arms 30, 3| and operatively connected theretois an arcuate leaf spring 42, the spring having one end extending towardthe web 34 of the arm 30 and secured thereto, and having the other endextending toward the web 35 of the arm 3| and secured thereto. The sprin42 normally biases the confrontin bearing plates 38 and 39 into abuttingengagement with respect to each other.

The respective aligned webs 34, 35, the spaced shanks 32, 33 and theconverging force applying members 36, 31 cooperate to form an elongatedlongitudinally extending opening 43 in which is slidably received anactuating means, generally designated by the numeral 44 for urging thebearing plates 38, 39 out of bearing engagement with respect to eachother.

The actuating means 44 includes a plunger 45 disposed longitudinally ofthe arms 30, 3| and slidably received and supported in aligned spacedapertures 46, 4'! provided in the confronting ends of the webs 34, 35 ofthe arms 30, 3| and in the leaf spring 43 respectively. One end of theplunger 45 is disposed exteriorly of the arms 30, 3| and the spring 43and is provided with a finger piece 48. The other end of the plunger 45is disposed within the opening 43 and carries a spherical ball 49 whichis adapted to bear against the adjacent inner faces of t e forceapplying members 36, 31. Accordingly as the plunger 45 is movedlongitudinally of the opening 43, the ball 49 urge the force pp ymembers 36, 3'! away from each other.

Circumposed about the plunger 45 within the opening 43 is a coil spring50, the spring having one end bearing against the adjacent inner facesof the webs 34, 35 and having the other end bearing against the ball 49.The spring 59 normally urges the ball 49 into bearing engagement withthe abutting faces of the bearing plates 39, 39. It is to be noted thatwhen the ball 49 is disposed intermediate the bearing plates 38, 39, asclearly illustrated in Figures 2 and 3, forces applied normal to theplates will not urge the plates back into abutting engagement with eachother. Accordingly the bearing plates will be maintained in spaced apartrelation with respect to each other until the ball 49 is retracted frombetween the plates.

In actual use, the cam shaft '23 is rotated until resulting in theraising of the valve head l8 out of seating engagement with the valveseat l9. The valve head I8 is then held in this position, as indicatedin Figure 1, while the cam 23 is being rotated to the full line positionshown therein, whereupon the bearing plates 38, 39 of the valvedisassembling tool it can be inserted between the confronting ends ofthe valve stem H and the cam follower 2i. The cam shaft 23 is once againrotated until the lobe of the cam 22 lifts the cam follower 25. Duringthe last named rotation an upwardly directed force is exerted on thebushing 16 through the cam follower 2l, the bearings plates 38, 39, andthe valve stem and spring. This upwardly directed force partially urgesthe bushing out of the bore i4.

Upon once again rotating the cam shaft 23 to the full line positionshown in Figure 1, the cam follower 2| will slide downwardly and theresiliency of the coil spring 50 will urge the ball 49 into its positionintermediate and bearing against the confronting faces of the bearingsplates 38, 39.

I6 is urged out of the bore [4. Accordingly the valve assembly I I canbe removed with speed and "facility and be replaced and repaired.

Although only one embodiment Of the invention has been shown, numerousother modifications may be made without departing from the spirit of theinvention as set forth in the appended claims.

What I claim is: 1. A Valve removing tool comprising a pair of armsarranged in spaced confronting relation, a web positioned transverselyof each of said arms adjacent one end of said arms and fixedly securedthereto, said webs facing and abutting each other, a bowed leaf springarranged longitudinally exteriorly of and straddling said webs andhaving its ends fixedly connected to said webs, a rod positionedlongitudinally of and between said arms and having one end slidablysupported in the abutting point of said webs and in said leaf spring andprojecting beyond said left spring, a ball positioned between said armsand spaced from said webs and fixedly secured to said rod, a bearingplate on the other end of each of said arms, said plates facing eachother and engaging said ball, a spring operatively connected to said rodfor biasing said ball toward its position of engagement between saidbearing plates, and a head on the projecting end of said rod abuttingthe leaf spring when the ball is in its position of en agement betweensaid bearing plates.

2. A valve removing tool comprising a pair of arms arranged in spacedconfronting relation, 2. web positioned transversely of each of saidarms adjacent one end of said arms and fixedly secured thereto, saidwebs facing and abutting each other, a bowed leaf spring arrangedlongitudinally exteriorly of and straddling said webs and having itsends fixedly connected to said webs, a rod positioned longitudinally ofand between said arms and having one end slidably supported in theabutting point of said webs and in said leaf spring and projectingbeyond said leaf spring, a ball positioned between said arms and spacedfrom said Webs and fixedly secured to said rod, a bearing plate arrangedat an angle with respect to each arm and fixedly secured adjacent theother end of said arms, said plates facing each other and engaging saidball, a spring operatively connected to said rod for biasing said balltoward its position of engagement between said bearing plates, and ahead on the projecting end of said rod abutting the leaf spring when theball is in its position of engagement between said bearing plates.

DAVID DYCK.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Meyer Oct. 9, 1945

